1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "spdk/stdinc.h" 35 36 #include "spdk_cunit.h" 37 38 #include "util/iov.c" 39 40 static int 41 _check_val(void *buf, size_t len, uint8_t val) 42 { 43 size_t i; 44 uint8_t *data = buf; 45 46 for (i = 0; i < len; i++) { 47 if (data[i] != val) { 48 return -1; 49 } 50 } 51 52 return 0; 53 } 54 55 static void 56 test_single_iov(void) 57 { 58 struct iovec siov[1]; 59 struct iovec diov[1]; 60 uint8_t sdata[64]; 61 uint8_t ddata[64]; 62 ssize_t rc; 63 64 /* Simplest cases- 1 element in each iovec. */ 65 66 /* Same size. */ 67 memset(sdata, 1, sizeof(sdata)); 68 memset(ddata, 0, sizeof(ddata)); 69 siov[0].iov_base = sdata; 70 siov[0].iov_len = sizeof(sdata); 71 diov[0].iov_base = ddata; 72 diov[0].iov_len = sizeof(ddata); 73 74 rc = spdk_iovcpy(siov, 1, diov, 1); 75 CU_ASSERT(rc == sizeof(sdata)); 76 CU_ASSERT(_check_val(ddata, 64, 1) == 0); 77 78 /* Source smaller than dest */ 79 memset(sdata, 1, sizeof(sdata)); 80 memset(ddata, 0, sizeof(ddata)); 81 siov[0].iov_base = sdata; 82 siov[0].iov_len = 48; 83 diov[0].iov_base = ddata; 84 diov[0].iov_len = sizeof(ddata); 85 86 rc = spdk_iovcpy(siov, 1, diov, 1); 87 CU_ASSERT(rc == 48); 88 CU_ASSERT(_check_val(ddata, 48, 1) == 0); 89 CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0); 90 91 /* Dest smaller than source */ 92 memset(sdata, 1, sizeof(sdata)); 93 memset(ddata, 0, sizeof(ddata)); 94 siov[0].iov_base = sdata; 95 siov[0].iov_len = sizeof(sdata); 96 diov[0].iov_base = ddata; 97 diov[0].iov_len = 48; 98 99 rc = spdk_iovcpy(siov, 1, diov, 1); 100 CU_ASSERT(rc == 48); 101 CU_ASSERT(_check_val(ddata, 48, 1) == 0); 102 CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0); 103 } 104 105 static void 106 test_simple_iov(void) 107 { 108 struct iovec siov[4]; 109 struct iovec diov[4]; 110 uint8_t sdata[64]; 111 uint8_t ddata[64]; 112 ssize_t rc; 113 int i; 114 115 /* Simple cases with 4 iov elements */ 116 117 /* Same size. */ 118 memset(sdata, 1, sizeof(sdata)); 119 memset(ddata, 0, sizeof(ddata)); 120 for (i = 0; i < 4; i++) { 121 siov[i].iov_base = sdata + (16 * i); 122 siov[i].iov_len = 16; 123 diov[i].iov_base = ddata + (16 * i); 124 diov[i].iov_len = 16; 125 } 126 127 rc = spdk_iovcpy(siov, 4, diov, 4); 128 CU_ASSERT(rc == sizeof(sdata)); 129 CU_ASSERT(_check_val(ddata, 64, 1) == 0); 130 131 /* Source smaller than dest */ 132 memset(sdata, 1, sizeof(sdata)); 133 memset(ddata, 0, sizeof(ddata)); 134 for (i = 0; i < 4; i++) { 135 siov[i].iov_base = sdata + (8 * i); 136 siov[i].iov_len = 8; 137 diov[i].iov_base = ddata + (16 * i); 138 diov[i].iov_len = 16; 139 } 140 141 rc = spdk_iovcpy(siov, 4, diov, 4); 142 CU_ASSERT(rc == 32); 143 CU_ASSERT(_check_val(ddata, 32, 1) == 0); 144 CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0); 145 146 /* Dest smaller than source */ 147 memset(sdata, 1, sizeof(sdata)); 148 memset(ddata, 0, sizeof(ddata)); 149 for (i = 0; i < 4; i++) { 150 siov[i].iov_base = sdata + (16 * i); 151 siov[i].iov_len = 16; 152 diov[i].iov_base = ddata + (8 * i); 153 diov[i].iov_len = 8; 154 } 155 156 rc = spdk_iovcpy(siov, 4, diov, 4); 157 CU_ASSERT(rc == 32); 158 CU_ASSERT(_check_val(ddata, 32, 1) == 0); 159 CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0); 160 } 161 162 static void 163 test_complex_iov(void) 164 { 165 struct iovec siov[4]; 166 struct iovec diov[4]; 167 uint8_t sdata[64]; 168 uint8_t ddata[64]; 169 ssize_t rc; 170 int i; 171 172 /* More source elements */ 173 memset(sdata, 1, sizeof(sdata)); 174 memset(ddata, 0, sizeof(ddata)); 175 for (i = 0; i < 4; i++) { 176 siov[i].iov_base = sdata + (16 * i); 177 siov[i].iov_len = 16; 178 } 179 diov[0].iov_base = ddata; 180 diov[0].iov_len = sizeof(ddata); 181 182 rc = spdk_iovcpy(siov, 4, diov, 1); 183 CU_ASSERT(rc == sizeof(sdata)); 184 CU_ASSERT(_check_val(ddata, 64, 1) == 0); 185 186 /* More dest elements */ 187 memset(sdata, 1, sizeof(sdata)); 188 memset(ddata, 0, sizeof(ddata)); 189 for (i = 0; i < 4; i++) { 190 diov[i].iov_base = ddata + (16 * i); 191 diov[i].iov_len = 16; 192 } 193 siov[0].iov_base = sdata; 194 siov[0].iov_len = sizeof(sdata); 195 196 rc = spdk_iovcpy(siov, 1, diov, 4); 197 CU_ASSERT(rc == sizeof(sdata)); 198 CU_ASSERT(_check_val(ddata, 64, 1) == 0); 199 200 /* Build one by hand that's really terrible */ 201 memset(sdata, 1, sizeof(sdata)); 202 memset(ddata, 0, sizeof(ddata)); 203 siov[0].iov_base = sdata; 204 siov[0].iov_len = 1; 205 siov[1].iov_base = siov[0].iov_base + siov[0].iov_len; 206 siov[1].iov_len = 13; 207 siov[2].iov_base = siov[1].iov_base + siov[1].iov_len; 208 siov[2].iov_len = 6; 209 siov[3].iov_base = siov[2].iov_base + siov[2].iov_len; 210 siov[3].iov_len = 44; 211 212 diov[0].iov_base = ddata; 213 diov[0].iov_len = 31; 214 diov[1].iov_base = diov[0].iov_base + diov[0].iov_len; 215 diov[1].iov_len = 9; 216 diov[2].iov_base = diov[1].iov_base + diov[1].iov_len; 217 diov[2].iov_len = 1; 218 diov[3].iov_base = diov[2].iov_base + diov[2].iov_len; 219 diov[3].iov_len = 23; 220 221 rc = spdk_iovcpy(siov, 4, diov, 4); 222 CU_ASSERT(rc == 64); 223 CU_ASSERT(_check_val(ddata, 64, 1) == 0); 224 } 225 226 int 227 main(int argc, char **argv) 228 { 229 CU_pSuite suite = NULL; 230 unsigned int num_failures; 231 232 CU_set_error_action(CUEA_ABORT); 233 CU_initialize_registry(); 234 235 suite = CU_add_suite("iov", NULL, NULL); 236 237 CU_ADD_TEST(suite, test_single_iov); 238 CU_ADD_TEST(suite, test_simple_iov); 239 CU_ADD_TEST(suite, test_complex_iov); 240 241 CU_basic_set_mode(CU_BRM_VERBOSE); 242 243 CU_basic_run_tests(); 244 245 num_failures = CU_get_number_of_failures(); 246 CU_cleanup_registry(); 247 248 return num_failures; 249 } 250